题目内容

. All of the guests ___________ by 9 o’clock , but the host _____________ until 15 minutes later .
A.arrived; didn’t turn up B.had arrived; didn’t turn up
C.arrived; hadn’t turned up D.had arrived; hadn’t turned up
B
本题对过去发生的动作的陈述,客人的到来发生在主人的到来之前。故选B
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